Spark indicating device for combustion motors



y 1932- P. NEMETH SPARK INDICATING DEVICE FOR COMBUSTION MOTORS FiledSept. 8, 1950 INVENTOR Pauz Mamet/z ATTORNEY Patented May 3, 1932UNITED, STATES PAUL NEMETI-I, or rLUsnnvG, NEW YORK SPARK INDICATING-DEVICE FOR COMBUSTION MOTORS Application filed september 8, 1930. SerialNo. 480,379.

This invention relates to'new and useful improvements in a sparkindicating device for combustion motors.

' The invention has for an object the provil sion of a device of theclass mentioned which is of simple durable'construction, dependable inuse and efficient in action, and which can be manufactured and sold at areasonable cost.

The invention proposes a transverse disc in each of the inlets from thecylinders of a motor to its manifold, stems supporting said disc andslidably extending through said manifold to the exterior, means forresiliently urg- 1 ing said stems inwards, and a signaling system havingan individual signal for each of said cylinders and including switchesin the path of movements of the outer ends of said stems for selectivelyoperating saidsignals upon extension of the stem.

The invention also proposes means for changing the cross sectional areasof said discs for noting the relative operation of the cylinders.

For further comprehension of the invention, and of the objects andadvantages thereof, reference will be had to the following descriptionand accompanying drawings, and to the appended claims in which thevarious novel features of the invention are more particularly set forth.7

In the accompanying drawings forming a material part of this disclosureFig. 1 is a plan view of a motor equipped with a device according tothis invention, the Wiring thereof being schematically shown.

Fig. 2 is an enlarged fragmentary horizontal view of a portion of themanifold shown in Fig. 1.

Fig. 3 is a fragmentary sectional view take on the line 3--3 of Fig. 2.

Fig. 4 is a fragmentary sectional view looking in the direction of theline H of Fig. 3.

The spark indicating device for combustion motors is shown in use withan exhaust manifold 10 of a combustion motor 11 and comprises atransverse disc 12 in each of the inlets 13 from the cylinders of themotor 11 to the said manifold 10, stems 14 supporting said discs 12 andslidably extending through said be called the power line. A plurality ofremanifold 10 to the exterior, means for resil- I iently urging saidstems inwards, and a signaling system having an individual signal 15 foreach of the cylinders of the motor 11 and including switches 16 in thepaths of movements of the outer ends 17 of the stems 14 for selectivelyoperating said signals 15 upon extensions of the stems 14. p

The combustion motor 11 may be of any type and design, and is shown forillustration purposes to be a four cylinder motor. A disc 12 is shown ineach of the four outlets 13 from the four cylinders of this motor andfour signal; lamps 15 have been illustrated for indicatlng each of thefour cylinders. The means for resiliently urging the stems 14 inwardscomprises brackets 18 attached upon the manifold 10 and formed with ends19 slidably receiving the stems 1 1. Flanges 20 are mounted upon thestems 1 1 and coaxial springs 21 act between the flanges 20 and thebracket ends 19 so as to normally urge the stems inwards. The springs 21should be of such design that their strengths normally maintain thestems 14 in the inward position except at such periods when the exhaustvalves from the cylinders open and a discharge of exhaust gas takesplace through the outlets 13 to the manifold 10. Then these springsshould give so that the stems move slightly outwards for closing theswitches 16.

The signaling system before referred to is shown on the drawings tocomprise a panel 22 which may be attached upon a dashboard of a motorvehicle provided with the motor 11, or upon the wall of a room in theevent that the engine 11 is of the stationary type. The lamps 15 aremounted upon the panel 22 so that at all times they may. be clearlyvisible. A switch 23 is also mounted upon the panel 22 and is connectedin the signaling system so that the circuit may be broken through thelamps in the event that this is desirable. The signaling system may beunderstood and traced by not ing that a battery 24 is provided in a linewhich connects in parallel with the various lamps 15 and in parallelwith one of the terminals of the switches 16. This line may turn lines25 are provided, and these lines selectively connect with individuallamps 15 and with the other terminals of individual switches 16 so thatwhen any one of the switches 16 is closed a circuit exists through oneof the lamps for illuminating the particular lamp. The stems 14 arearranged in line with the switches 16 so that upon extension suchswitches are closed.

A means is also provided for changing the cross sectional areas of thediscs 12 for noting the relative operations of the various cylinders ofthe engines. This means comprises adjacent disc sections 12 and 12formedwith openings 26 alignable with each other in one relativeposition of the discs and of such sizes so that in another relativeposition of the discs passage of the gases is restrained. The disc 12 isattached upon a rod 27 extending through the bore of a tubular member 28attached on the disc 12. The rod 27 and tubular member 28 constitute thestem 14 previously referred to. A knob 29 is rotatively mounted upon thetubular member 28 and supports a pin 30 extending through a radial slot31 formed in the tubular member 28 and connects with a rod 27 in thetubular member. The arrangement is such that the knob 29 may be turnedfor turning the rod 27 so as to turn the disc 12 relative to the disc 12In order to prevent rotation of the tubular member 28, a key 32 isarranged to project from the tubular member and engage in a key slotformed in the bracket 18. A pointer 33 projects from the knob 29 andshows upon a scale 34 arranged upon the manifold 10 so that from theexterior the difierent opened positions of the openings 26 may be known.

In operation of the device, the knobs 29 of the various cylinders areturned so as to open the passage through the disc 12 as desired. Then asthe exhaust valves from the different cylinders open, the exhaust gaswill pass through the outlets 13 and move the stems 14 outwards so as tocause the ends of the stems to act against the switches 16 and close thecircuits through the lamps 15. Each of the lamps may be watched, and asthey light it will be known that the various cylinders are exhaustingproperly. This is particularly true if the openings 26 are properly adjusted. They should be so adjusted that in the event that ignition doesnot take place in one of the cylinders and this particular cylinderexhausts unburnt gas, the velocity or pressure of this exhaust gasshould not be strong enough to move the stem for closing the switch. Itwill then be known that the particular cylinder is not functioningproperly. The relative functionings of the different cylinders may becompared with each other by gradually setting the knobs to pointswhereby the switches just close. Comparisons may then be made, and itwill be seen whether all of the cylinders are functioning with the sameefliciencies or whether certain ones are less eflicient than the otherones. If large discrepancies are shown, then investiga tion regardingthe ignition system is necessar eilhile I have shown and described thepreferred embodiment of my invention, it is to be understood that I donot limit myself to the precise construction herein disclosed and theright is reserved to all changes and modifications comin within thescope of the invention as defined in the appended claims.

Having thus described my invention, What I claim as new, and desire tosecure by United States Letters Patent is 1. In a device of the classdescribed, a transverse disc for mounting in each outlet from thecylinders of a motor to the manifold, stems supporting said discs andslidably extending through said manifold to the exterior, means forresiliently urging said stems inwards, said means for resiliently urg-wing said stems inwards comprises brackets attached on said manifolds andhaving overhanging ends slidably supporting said stems, flanges on saidstems, and expansion springs acting between said overhanging ends andsaid flanges.

2. In a device of the class described, a transverse disc for mounting ineach outlet from the cylinders of a motor to the manifold, stemssupporting said discs and slida-bly extending through said manifold tothe exterior, means for resiliently urging said stems inwards, saidmeans for resiliently urging said stems inwards comprises flanges fixedon said stems and resilient means acting against said flanges.

3. In a device of the class described, a

transverse disc for mounting in each outlet from the cylinders of amotor to the manifold, stems supporting said discs and slidablyextending through said manifold to the exterior, means for resilientlyurging said stems inwards, and means for changing the cross sectionalareas of said discs for noting the relative operation of said cylinders,comprising adjacent'disc sections constituting said disc and formed withapertures alignable in one relative position and out of alignment inanother, and means for adjusting the relative aligned position of saiddisc sections, comprising a tubular member connected with one discsection, a rod connected with the other disc section and extendingwithin said tubular member, a knob on the tubular member, and a pinbetween said knob extending through a radial slot of said tubular memberand connected with said rod.

4. In a device of the class described, a transverse disc for mounting ineach outlet from the cylinders to the manifold of a combustion motor,and means for changing the cross sectional areas of said discs fornoting the relative operation of said cylinders, comprising adjacentdisc sections formed with alignable apertures, a tubular memberconnected With one disc section, a rod connected with the other discsection and extending within said tubular member, and means forrevolving said rod relative to said tubular member.

In testimony whereof I have aflixed my signature. PAUL NEMETH.

